package com.bs.sc.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Component;

@Component
public class CrossDomainFilter implements Filter {

	@Override
	public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
			throws IOException, ServletException {
		HttpServletRequest request = (HttpServletRequest) servletRequest;
		HttpServletResponse response = (HttpServletResponse) servletResponse;
		response.setHeader("Access-Control-Allow-Origin", request.getHeader("Origin"));// 设置允许跨域访问的地址
		response.setHeader("Access-Control-Allow-Methods", "HEAD, POST, GET, OPTIONS, DELETE, PUT");
		response.setHeader("Access-Control-Max-Age", "3600");
		response.setHeader("Access-Control-Allow-Headers", "x-requested-with");
		response.setHeader("Access-Control-Allow-Credentials", "true"); // 是否支持cookie跨域
		filterChain.doFilter(servletRequest, servletResponse);
	}

}
